FILE - In this Friday, Oct. 6, 2017, file photo, President Donald Trump speaks during a Hispanic Heritage Month event in the East Room of the White House, in Washington. The White House is finalizing an executive order that would expand health plans offered by associations to allow individuals to pool together and buy insurance outside their states, a unilateral move that follows failed efforts by Congress to overhaul the health care system. A senior administration official said Sunday, Oct. 8, that Trump was expected to sign the executive order next week. (AP Photo/Evan Vucci, File)

WASHINGTON (AP) — President Donald Trump is tweeting that U.S. policy on North Korea has been unsuccessful, and that America has given “billions of dollars” and received nothing in return.

Trump’s recent tweets on North Korea have prompted questions about whether the president is leaning toward military action. On Saturday, Trump said U.S. “negotiators” were made to look like fools and “only one thing will work.” One prominent Senate Republican, Bob Corker, told The New York Times that he is concerned that Trump could set the U.S. “on the path to World War III.”

On Monday, Trump tweeted: “Our country has been unsuccessfully dealing with North Korea for 25 years, giving billions of dollars & getting nothing. Policy didn’t work!”